package com.zt.reggie.service.impl;

import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zt.reggie.common.BaseContext;
import com.zt.reggie.common.CustomException;
import com.zt.reggie.entity.*;
import com.zt.reggie.mapper.OrdersMapper;
import com.zt.reggie.service.*;
import org.apache.commons.codec.net.BCodec;
import org.apache.tomcat.jni.Local;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @author 挚爱之夕
 * @version 1.0
 * @implSpec com.zt.reggie.service.impl
 * @since 2023 - 02 - 28 - 20:05
 */
@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;
    @Override
    @Transactional
    public void submit(Orders orders) {
        // 获取用户Id
        Long currentId = BaseContext.getCurrentId();
        // 查询用户的购物车数据
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(BaseContext.getCurrentId());
        if(shoppingCarts == null || shoppingCarts.size() == 0){
            throw new CustomException("购物车为空,不能下单");
        }

        //查询用户数据
        User user = userService.getById(currentId);
        //查询用户地址
        AddressBook addressBook = addressBookService.getById(orders.getAddressBookId());
        if(addressBook == null){
            throw new CustomException("地址为空,不能下单");
        }
        //向订单表插入一行数据
        long orderId = IdWorker.getId();
        orders.setUserId(currentId);
        orders.setNumber(String.valueOf(orderId));
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setUserName(user.getName());
        orders.setPhone(user.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        orders.setConsignee(addressBook.getConsignee());


        //计算金额
        AtomicInteger amount = new AtomicInteger(0);

        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());
        orders.setAmount(new BigDecimal(amount.get()));
        this.save(orders);
        //向订单明细表插入若干个数据
        orderDetailService.saveBatch(orderDetails);
        //清空购物车
        shoppingCartService.clean();
    }
}
